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Our Vision: Continue to be the leading UK mobile infrastructure services company.If you are interested in applying for this job, please make sure you meet the following requirements as listed below.Our Mission: To be famous for excellence in delivery, embracing transformation with our people and our customers at its heart.We are at an exciting time in our companys development. We've come a long way since we were first formed in 2012. From the rollout of new technologies and managing complex legislation affecting the industry, we are leading the conversation on innovation and developing sharper solutions to serve our customers better. We collaborate as a team to meet the high standards expected of us and demand the best of ourselves through our values.We are seeking an experienced and creative Senior Marketing Campaign Manager to lead the strategy, design, and execution of high-impact, integrated B2B campaigns that support our brand and growth ambition into new product categories and market sectors. This role is ideal for a strategic thinker with creative flair and proven (portfolio) delivery capability, who can independently craft campaigns that cut through and deliver real commercial outcomes. You will be responsible for turning complex products into compelling, multi-channel propositions, pen story-telling that engages with our target audiences across - go-to-market, acquisition, sponsorship, and event-led campaigns - as we enter new growth areas in the business.Leadership and independent creative thinking are essential as you define innovative, audience segmented B2B value propositions for growth. Youre an excellent team player and enjoy working as a team collaborator with multiple stakeholders to convert ideas to successful execution. You thrive on tight deadlines, across multiple projects and stakeholders, applying your deep knowledge of creative, messaging & channels to deliver results-driven OKR outcomes.Key Responsibilities:Campaign Strategy & ExecutionOwn end-to-end delivery of marketing campaigns from planning and messaging to creative development, media mix, launch, and OKR success & reporting.Lead B2B acquisition marketing campaigns for new product launches in mobile and digital infrastructure solutions that enable better nationwide connectivity for customers, target audiences, partners and communities.Lead campaigns to drive awareness, engagement and consideration into new B2B vertical sectors, aligned to sales and growth targets.Deliver high-impact go-to-market campaigns that clearly articulate value propositions and generate engagement and leads in the funnel across priority segments.Creative & Channel LeadershipIndependently craft campaigns with cut-through creatively and commercially across channels including digital, paid, social, print, events, and email.Drive content and storytelling across all touchpoints, ensuring consistency with our brand identity and tone of voice.Lead sponsorship activations and owned/earned Event campaigns to support strategic marketing objectives.Collaboration & IntegrationWork closely with brand, communications, digital & product colleagues, as well as alongside the business development, commercial & sales team to integrate campaign activity and drive performance across the lead to order funnel.Coordinate cross-functional inputs and demands from functional stakeholders across the business as well as external agencies.Manage multiple campaigns, proposition development, project workstreams and stakeholders - ensuring delivery to deadline, budget, brand & campaign success against targeted ROI outcomes.Insight & PerformanceUse strategic insights, audience segmentation, and performance data to inform campaign planning, targeting, and optimisation.Measure campaign impact against OKRs (e.g., leads, awareness, engagement) and adapt tactics for continuous improvement.Skills & Experience:8+ years of experience in B2B marketing campaign management, ideally in telecoms, technology, or infrastructure sectors.Strong ability to translate strategic objectives and complex propositions into impactful, audience-led campaigns.Deep knowledge of digital, creative, social, and AI tools for campaign execution and optimisation.Proven talent in crafting campaigns with creativity and commercial impact, delivering measurable growth and brand value.Results-driven mindset with a focus on exceeding OKRs and driving customer engagement across the full marketing funnel.Exceptional project management skills; comfortable handling multiple campaigns under pressure with tight deadlines.Experience with sponsorships and events as part of integrated campaign strategies.Confident stakeholder manager, working closely with the Chief Sales and Commercial Officer, and collaborative team player experienced in working across disciplines on client side and with external agencies.Why Join Cornerstone:A strategic and creative role at the heart of the UKs leading mobile and digital infrastructure company.Opportunities to build campaigns that shape markets, grow new propositions, and make a real impact on national connectivity.A collaborative, forward-thinking growth environment where youll work with a talented, multi-disciplinary marketing team.What we offer: Competitive salary and an excellent bonus structure 30 days holiday Competitive pension scheme Hybrid working Life insurance Cycle to Work Retail Discount Competitive refer a friend scheme Private Healthcare InsuranceOur commitment to Equity, Diversity, and Inclusion (EDI) is fundamental to our success. We strive to cultivate an inclusive environment where every employee feels valued, respected, and empowered. By embracing unique perspectives and experiences, we drive innovation and drive our organisation forward, therefore, we recognise the importance of welcoming applications from candidates of all backgrounds.We want to ensure everyone is able to present their best self throughout the recruitment process so if you require any adjustments, please let us know.If this role is of interest to you and you would like to find out more, please do apply with an up to date version of your CV.